2018 Sonoma County Trails Challenge

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The Sonoma County Trails Challenge is an invitation to discover your Regional Parks. 

Download your 2018 Trails Challenge guidebook
(PDF: 4.63 MB)

Hike, run, bike or ride at least 5 featured trails anytime from June through September and get a Trails Challenge T-shirt! The guidebook presents trail notes for 15 parks, turn-by-turn trail directions, maps, and suggestions for themed hikes, including an all-park challenge of more than 50 miles. 

Share your trail photos on social media with hashtags #SonomaCountyParks #TrailsChallenge, and you'll be eligible for giveaways of park memberships and REI trail gear.

A limited number of print editions of the 2018 guidebook are available at Regional Parks' Santa Rosa office and at staffed entrances to Spring Lake and Ragle Ranch parks. 

Happy Hiking!

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Regional Parks members enjoy free parking, a free night of camping, free admission to the Tolay Fall Festival, and more.

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